This helps debugging unexpected traps, as you can figure out which
instruction triggered the trap.

R=mstarzinger@chromium.org

Change-Id: I61735f14e2838ace195f6b84b555b9ddfc06aa0f
Reviewed-on: https://chromium-review.googlesource.com/1140296Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54515}